| 摘要 |
A process and a plant for the preparation of a microparticulated denatured protein material, such as microparticulated whey protein, with a means particle size of between a 0.1µm and 5µm in diameter. An aqueous solution or colloidal dispersion of a soluble or dispersible protein material is degassed, pre-heated to a temperature below 69.5°C, further heated by use of mechanical energy to a temperature (T) between 70 and 120°C in a period of time (td) between 5 and 300 seconds under mixing, and then quench cooled to a temperature below 55°C within a period of time (tq) of less than 30 seconds. The quench cooling ensures a desirable small particle size without aggregation or subsequent homogenization ensuring a microparticulated product with excellent or ganoleptic qualities with a non-gritty appearance, a suitable opacity, a homogeneous texture and a desirable viscosity in aqueous dispersion and a fat-like mouthfeel. The microparticulated protein is suitable as a texturing and water binding additive for use in both food products and non-food products including pharmaceutics and cosmetics. Thus the denatured protein can be used in attractive products endowed with a desirable appearance, texture and skinfeel or mouthfeel with a good consumers appeal. |
